Help – New Kodi installation on Fire Stick.

Having problems!! I have tried numerous ways of installing Kodi, going through many tutorials on You Tube, on to a new Amazon Firestick using ES Downloader. Each time have get to a similar point in the process and I hit a brick wall.

Have made the changes in settings, turning both options on. Have downloaded ES, gone through the process of adding to my favourites using the various path address. Opening it I get the download successful, but when I try to ‘open file’ prior to the installation pages I get a pop-up asking me to select ES Note Editor or HTML Viewer, neither of which get me to install? Any ideas how to get round this or what I’m doing wrong. Your advice would be very much appreciated.

Strange thing is that I have already installed Kodi onto another firestick, purchased from Amazon at the same time, without having this problem so I am really confused as to what I am doing wrong or differentlyConfused

This seems to happen whether I am trying to download Krypton or Jarvis so I guess it is something going on within ES??